Attitude, not Aptitude, determines Altitude.

The noblest pleasure is the joy of understanding.

Yesterday is but today's memory and tomorrow is today's dream.

Science is organized knowledge. Wisdom is organized life.

Empty pockets never held anyone back. Only empty heads and empty hearts can do that.

All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.

Don't criticize what you don't understand, son. You never walked in that man's shoes.

No one can make you feel inferior without your consent.

It was a melancholy secret that reality can arouse desires but never satisfy them.

Nature is pleased with simplicity. And nature is no dummy

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

Take care of the pieces well. The whole will take care of itself.

The greatest of wealth is the richness of the soul.

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

I've never known any trouble than an hour's reading didn't assuage.

You have heard that it was said, 'Eye for eye, and tooth for tooth.' But I tell you, do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also.

It takes a great man to be a good listener.

Time wounds all heels.

A man may imagine things that are false, but he can only understand things that are true.

It’s your road and yours alone. Others may walk it with you, but no one can walk it for you.

What can't be cured must be endured.