The world of Indonesian environmentalists is mourning. One of its biggest activists, political endorsers, practitioners, and academia has gone. Prof Surna Tjahja Djajadiningrat, a.k.a. Prof Naya, has died at age 69. Prof. Naya is one of my strongest mentors, and the God has planned to tie me to him since the beginning of my journey in this world. May Allah give him blessings and grant him peace. May the God make him among the inhabitants of jannah and may He spare him from the punishments jahanam and the grave. Even though you didn’t know Prof. Naya, please, take the time to make a sincere due for him. May the God make both dunia and akhirat easy for us and help us through hard times. Aamiin.