The divisions of science are ...

The divisions of science are not like different lines that meet in one angle, but rather like the branches of trees that join in one trunk.
The divisions of science are not like different lines that meet in one angle, but rather like the branches of trees that join in one trunk.

Quotes from the same author

Silence is the sleep that nourishes wisdom.
Friendship increases in visiting friends, but in visiting them seldom.
A wise man will make more opportunities than he finds.
There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so; but he that thinks himself the wisest is generally the greatest fool.
It is impossible to love and to be wise.