Those who can not change their minds can not change anything.
If we do not lay out ourselves in the service of mankind whom should we serve?
A precedent embalms a principle.
Yesterday is but today's memory and tomorrow is today's dream.
It was a melancholy secret that reality can arouse desires but never satisfy them.
A perfection of means, and confusion of aims, seems to be our main problem.
Whatever the mind of man creates, should be controlled by man's character
It is not titles that honor men, but men that honor titles.
The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.
All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope.
Our society is run by insane people for insane objectives.
Drop the idea that you are Atlas carrying the world on your shoulders. The world would go on even without you. Don't take yourself so seriously.
Without courage, wisdom bears no fruit.
Strength does not come from physical capacity. It comes from an indomitable will.
Good advice is always certain to be ignored, but that's no reason not to give it.
All differences in this world are of degree, and not of kind, because oneness is the secret of everything.
Nothing is as easy as it looks.
There is geometry in the humming of the strings. There is music in the spacing of the spheres.
All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
Medicine heals diseases of the body, wisdom frees the soul from passions.
A good teacher protects his pupils from his own influence.