Either you run the day or the day runs you.
Problems are not stop signs, they are guidelines.
By failing to prepare, you are preparing to fail.
Know or listen to those who know.
Begin to be now what you will be hereafter.
Only the educated are free.
If you can dream it, you can do it.
To know oneself, one should assert oneself.
The wise does at once what the fool does at last.
You never know what motivates you.
Science fiction is an amazing literature: plot elements that you would think would be completely worn out by now keep changing into surprising new forms.