I'm thinking to get the word 'strength' in another language, how about Tagalog?
Astig or Matigas... mean hard or strong but it gives too much of a masculine feel to it. I'd probably need to go for Malakas.
Every culture has proverbs and they give a massive hint as to how those people live their lives. Obviously surroundings effect behaviour, e.g. money, personalities, nature, resources, government and people will do what they think is right or what they need to do to survive. Respect.
Filippino Proverbs
Children who get everything they ask for seldom succeed in life
Don't empty the water jar until the rain falls
He who speaks too much works too little
If you buy things you don't need, you will soon be selling things you do need
If you need to go a long way, go slowly
Stones hurdled to the sky. Dont be angry if you get hit.
The noisest drum has nothing but air inside
Where the blanket is short, learn to bend
Man promises while in need
To a person without fear, there is no such thing as a high fence
If you wear something borrowed, you can be stripped in the streets
Reading through 99 proverbs, this is what I gathered from the filippino way of life:
Be humble. Settle for what you have and be grateful. Don't be greedy. Work hard and be determined. Do a good job. Don't be useless. Balance your life. Don't talk too much, don't gossip. Actions speak louder than words. Don't become expectant or think good times will last forever. Don't borrow, work for your own needs.
Filipino Tribal