Who said “Opinions alter, manners change, creeds rise and fall, but the moral laws are written on…”?

“Where an opinion is general, it is usually correct.”

“The foolish and the dead alone never change their opinions.”

“Opinions cannot survive if one has no chance to fight for them.”

“We accumulate our opinions at an age when our understanding is at its weakest.”

“Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.”

“Power tends to corrupt, and absolute power corrupts absolutely.”

“The danger is not that a particular class is unfit to govern. Every class is unfit to govern.”

“Every thing secret degenerates, even the administration of justice; nothing is safe that does not show how it can bear discussion and publicity.”

“There are two things which cannot be attacked in front: ignorance and narrow-mindedness. They can only be shaken by the simple development of the contrary qualities. They will not bear discussion.”

“To be able to look back upon one's past life with satisfaction is to live twice.”

“A wise person does at once, what a fool does at last. Both do the same thing; only at different times.”