Moderation in temper is always a virtue; but moderation in principle is always a vice.
Man is the only creature who refuses to be what he is.
A person who spends more than he earns is a fool
If you do what you've always done, you'll get what you've always gotten.
I think, therefore I am.
Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.
Simplicity is the ultimate sophistication.
Great acts are made up of small deeds.
As our case is new, we must think and act anew.
Courage is resistance to fear, mastery of fear - not absence of fear.
The only real mistake is the one from which we learn nothing.
I've come to believe that all my past failure and frustration were actually laying the foundation for the understandings that have created the new level of living I now enjoy.
There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss.
Sometimes one creates a dynamic impression by saying something, and sometimes one creates as significant an impression by remaining silent.
There is nothing more uncommon than common sense.
Be silent or let thy words be worth more than silence.
Man is not the creature of circumstances, Circumstances are the creatures of men.
It is better to be looked over than overlooked.
Jealousy is the tribute mediocrity pays to genius.
Nature is pleased with simplicity. And nature is no dummy
Good means not merely not to do wrong, but rather not to desire to do wrong.