For the happiest life, days should be rigorously planned, nights left open to chance.
happiest life, rigorously, planned, life
A person will sometimes devote all his life to the development of one part of his body - the wishbone.
person will sometimes, life, development
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.
If life were predictable it would cease to be life, and be without flavor.
predictable, life, without flavor