If you lay hands on today, you will find you are less dependent on tomorrow. While you delay, life speeds on by.

Every thing we have belongs to others, Lucilius; time alone is ours. Nature has put us in possession of this one thing, this fleeting, slippery thing – and anyone who wants to can dispossess us.

Seneca (4 BC – AD 65),  Moral Letters to Lucilius (1.1)