When a person boasts that he will not change his beliefs, he undertakes to walk in a strai

When a person boasts that he will not change his beliefs, he undertakes to walk in a straight line all the time — this is a fool, confident in his infallibility. There are no principles, but there are events; there are no laws — there are circumstances; a high-flying person himself tries on events and circumstances to guide them.

Honore de Balzac