Conquer

They can conquer who believe they can.

Killing time

As if you could kill time without injuring eternity.

If a man is proud

If a man is proud of his wealth, he should not be praised until it is known how he employs it.

Conversation should be pleasant

Conversation should be pleasant without scurrility, witty without affectation, free without indecency, learned without conceitedness, novel without falsehood.

Gandhi

Be the change that you wish to see in the world.

Oscar Wilde

Be yourself. Everyone else is already taken.

Criticism is not agreeable

Criticism may not be agreeable, but it is necessary. It fulfils the same function as pain in the human body. It calls attention to an unhealthy state of things.