In order to understand life it is not only necessary not to be indifferent to men, but not to be indifferent to flocks, to trees. One should be indifferent to nothing.

Remy de Gourmont
Profession: Author
Nationality: French
Some suggestions for you :
Each man must grant himself the emotions that he needs and the morality that suits him.
We live less and less, and we learn more and more. Sensibility is surrendering to intelligence.
Life is a series of sensations connected to different states of consciousness.
Thinking is hard work. One can't bear burdens and ideas at the same time.
Two elements are needed to form a truth - a fact and an abstraction.
The terrible thing about the quest for truth is that you find it.