Zitat des Tages über Sinus / Sine:
A practical way to travel between the stars is a must-have for space opera, and a sine qua non for our frequently vaunted future as a galactic society.
For me, politeness is a sine qua non of civilization.
Taking charge of your own learning is a part of taking charge of your life, which is the sine qua non in becoming an integrated person.
Fidelity to the subject's thought and to his characteristic way of expressing himself is the sine qua non of journalistic quotation.
Sound money is the sine qua non of a prosperous society.
