The most important knowledge is that which guides the way you lead your life.

Life consists in penetrating the unknown, and fashioning our actions in accord with the new knowledge thus acquired.

I only hope that when I am free, as they are free to go in quest, of the knowledge beyond the bounds of life, it may not seem better to me to rest.

All knowledge which ends in words will die as quickly as it came to life, with the exception of the written word: which is its mechanical part.

True life is lived when tiny changes occur.

Progress consists only in the greater clarification of answers to the basic questions of life.