Science has been seriously retarded by the study of what is not worth knowing and of what is not knowable.
Courage is the commitment to begin without any guarantee of success.
Age merely shows what children we remain.
Nothing is more consonant with Nature than that she puts into operation in the smallest detail that which she intends as a whole.
Just trust yourself and you'll learn the art of living.
The intelligent man finds almost everything ridiculous, the sensible man hardly anything.