He who goes into a crowd must now go one way and then another, keep his elbows close, retire or advance, and quit the straight way, according to what he encounters; and must live not so much according to his own method as to that of others; not according to what he proposes to himself, but according to what is proposed to him, according to the time, according to the men, according to the occasions. Plato says, that whoever escapes from the world's handling with clean breeches, escapes by miracle.

Montaigne

I have a soul free and entirely its own, and accustomed to guide itself after its own fashion; having hitherto never had either master or governor imposed upon me: I have walked as far as I would, and at the pace that best pleased myself; this is it that has rendered me unfit for the service of others, and has made me of no use to any one but myself.

Michel de Montaigne

About Filling A Commonplace Book?

I go here and there, culling out of several books the sentences that best please me, not to keep them (for I have no memory to retain them in), but to transplant them into this; where, to say the truth, they are no more mine than in their first places. 

Michel de Montaigne