To be perfectly happy it does not suffice to possess happiness, it is necessary to have deserved it.
Victor HugoSpeak out in acts; the time for words has passed, and only deeds will suffice.
Alfred North WhiteheadSimply to acquiesce in skepticism can never suffice to overcome the restlessness of reason.
Immanuel KantItaly, and the spring and first love all together should suffice to make the gloomiest person happy.
Bertrand Russell