Truth and roses have thorns about them.

真理和玫瑰，身旁都有刺。

A contented mind is the greatest blessing a man can enjoy in this world.

知足是人生在世最大的幸事。 ——Joseph Addison（美国作家艾迪生）

If you wish to succeed, you should use persistence as your good friend, experience as your reference, prudence as your brother and hope as your sentry.

如果你希望成功，当以恒心为良友，以经验为参谋，以谨慎为兄弟，以希望为哨兵。

这些名言涵盖了真理、幸福、成功和人生智慧等多个方面，希望对你有所帮助。