The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.
— Friedrich Nietzsche

Perhaps the surest test of an individual's integrity is his refusal to do or say anything that would damage his self-respect.
Thomas S. Monson surest quote

The surest sign of age is loneliness.
— Amos Bronson Alcott

The surest way to fail is not to determine to succeed.
— Richard Brinsley Sheridan

There are several good protections against temptation, but the surest is cowardice.
— surest quotation by Mark Twain