Nature!
The ocean symbolizes the vastness and abundance of the Universe. The sun gives its light to one and all, not keeping scores or thinking of what's in it for me. The trees provide shade and fruits. The night gives us time to rest and rejuvenate.
The flowers give their fragrance to every passerby unasked. Forgiveness is what the flower gives to the hand that crushes it.
Nature provides valuable lessons about unconditional giving. If you want to be aligned with Nature start practising unconditional giving!