SO GOOD QUOTES

Thinkers can be divided into those who think in the first instance for their own instruction and those who do so for the instruction of others. The former are genuine thinkers for themselves in both senses of the words: they are the true philosophers. They alone are in earnest. The pleasure and happiness of their existence consists in thinking. The latter are sophists: they want to appear as thinkers and seek their happiness in what they hope thereby to get from others. This is what they are in earnest about. To which of these two classes a man belongs may quickly be seen by his whole style and manner.

—Arthur Schopenhauer, Essays and Aphorisms (Classics)