A small leak will sink a great ship  Small problems are worth the time to fix as they can eventually cause great damage
A stitch in time saves nine By taking immediate action we can prevent a fault, damage or trouble from getting worse
A straw will show which way the wind blows A small incident can reveal an important event
The sky is the limit There is no upper limit to something
The sins of the fathers will be visited upon the children People will be punished for the wrongs committed by their parents, forefathers, or those who have preceded them.
The spirit is willing but the flesh is weak To do something unworthy just because it gives you the pleasure
Same meat, different gravy The same thing presented differently
Scratch something and you'll find a something When you know a person better, you will realize that he is not all he seems to be      
See which way the wind is blowing Test how things stand      
Seek and ye shall find
 When you set out to look for the truth with all your heart, you will find it      
Self trust is the first secret of success   You need to believe in your abilities first of all in order to succeed in life      
Set a thief to catch a thief Use the skill and experience of one wrongdoer to catch another      
Silence gives consent If you do not protest, object or say anything in response to a proposal, plan etc. it means you are agreeable to it
Six of one and half a dozen of the other
 The same or nearly the same in one case as in the other      
Slow and steady wins the race Do things at your own pace and ability, and you will succeed in time      
Smile, and the world smiles with you; cry, and you cry alone   People are usually ready to share in your happiness but not in your sadness      
Someone's bark is worse than his bite People sometimes bark but in time we learn they're not always as frightening as they seem.
Something is better than nothing   Be thankful that you do have something, and do not complain about how little you have
Spare the rod and spoil the child A child who is not punished and showed the error of his ways will become unruly.
Speak of the devil and he's sure to appear What you say when you are talking of someone, and he appears
Speak when you are spoken to Respond when you are asked a question
Speech is silver, silence is golden Talk may be beneficial, but sometimes acquiescence may be the best option to take.
Starve a cold, feed a fever The best way to treat a cold is to skip a meal or two; the best way to treat fever is to have a light meal
Sticks and stones may break my bones but words will never hurt me The unkind words of small-minded people should not upset or depress you
Still waters run deep One who is usually silent and goes about his business quietly may be a very wise person.
Stolen fruit is the sweetest The most treasured part of an achievement is the experience and lessons you learn in the process
Strike while the iron is hot Seize a good opportunity as quickly as possible.
Success is a journey, not a destination The most treasured part of an achievement is the experience and lessons you learn in the process
Sufficient unto the day is the evil thereof Do not be troubled about the problems you may face tomorrow, as you have enough to contend with today