Time is passing : not leaden stepping
But sprinting on winged feet,
Quick silver slipping by.

You don't have time, Len. That is the most bitter and the most beautiful piece of advice I can offer. If you don't have what you want now, you don't have what you want.

Time does not pass, it continues

Time flames like a paraffin stove / and what burns are the minutes I live.

I avoid looking at the clock, fearing the slow passing of time that will only seem slower if I watch its progress.

Our life is made up of time. Our days are measured in hours, our pay measured by those hours, our knowledge is measured by years. [...] And yet time eventually runs out and you wonder in your heart of hearts if those seconds, minutes, hours, days, weeks, months, years and decades were being spent the best way they possibly could.