a fabric giveaway and a reminder to be good

I was editing categories on Scoutie Girl, and I wanted to see exactly what I had tagged with "cool t-shirts." And look what I found!!! These were done on Cafe Press about 2 years ago by my one true love! I had forgotten all about them.

He had a whole slew of them designed by his in-house graphic designer (me) - all with "be __________" phrases. I was so jazzed up for him b/c I thought they would sell like crazy. Plus he was going to donate the profits to charity. His shop name was Sibi Totique, which means 'for oneself and for others'. Totally fitting!!! And it embodies much more about his philosophy on life, too.

Since it was all about giving back, I'll give a triple mix pack of fabric swatches to whomever can correctly name why this phrase is famous and tell me what it means to her/him! I'll pick a random winner. Comments are open til next Friday, 8/22.

[edit] The correct answer is below. To be entereed, just add your two cents as to what "for oneself and for others" means to you. I will draw a random winner.