Change is impossible — The tail of the greyhound will not be made straight even though it remains seven years in the melting-pot.

Change is always possible — Whatever your past has been, you have a spotless future.

Change is unlikely in a great man — A god does not change his ways.

Change is all about timing — It is not best to swap horses while crossing the river.

Conflict is not possible without communication.

Conflict is avoided most on account of mutual respect.

Conflict is inevitable but not necessarily bad.

Conflict is the force that drives a theatrical writer.

Criticism is toothless. If it had any real power to harm, the skunk would have been extinct by now.

Criticism is showing the object of criticism as beautiful, as magnificent. One has to love what they criticize and give it a new beauty, as 'good destruction requires love'.

Criticism is not denunciation, but working your way back to those problems which an author of genius has posed, all the way back to that which he does not say in what he says, in order to extract something that still belongs to him, though you also turn it against him.

Criticism is best ignored — If it's untrue, disregard it; if it's unfair, keep from irritation; if it's ignorant, smile; if it's justified, learn from it.

A Discovery is great, if it is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.

Discovery is secondary to persuasion — In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

Discovery is seeing what everybody has seen and thinking what nobody has thought.

Discovery is the ability to be puzzled by simple things.